JP2019214838A - Opening/closing device for construction having obstacle detection means - Google Patents

Abstract

To make the upward movement of an intermediate detection member 10 smooth, in an opening/closing device for a construction having obstacle detection means for constituting a seat plate 7 by forming the intermediate detection member 10 which comprises a lower seat plate part 9 upwardly moving by receiving the fact that an obstacle abuts on an upper seat plate part 8 connected to the lowest end slat 3a, and upwardly moving by receiving the upward movement of the lower seat plate part between the upper and lower plate parts 9, 9, and detecting the upward movement of the intermediate detection member 10 by an obstacle detection sensor 11.SOLUTION: A detection receiving part 10e which is deviated to one side in a fore-and-aft direction rather than a perpendicular line X passing a pivot part 10a is formed at a vertical piece part 10b of an intermediate detection member 10, and the detection receiving part 10e is pushed to the perpendicular line X direction by a corner part 9g of an abutting lower seat plate part 9, thus making the intermediate detection member 10 upwardly movable.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a technical field of an architectural switchgear provided with an obstacle detecting means installed at an opening such as a doorway of a building.

Today, there is known an architectural opening / closing device configured to open and close an opening that can pass in the front-rear direction such as an entrance by moving the opening / closing body up and down by driving the opening / closing device. As an example, an architectural shutter device configured to open and close an opening by moving a shutter curtain (opening / closing body) up and down by rotation of a winding drum accompanying forward and reverse driving of an electric motor is exemplified. In order to prevent an obstacle such as a person or a luggage from being caught in the shutter curtain during the closing operation, an obstacle detecting unit is provided, and when the obstacle detecting unit detects an obstacle, the closing operation of the shutter curtain is performed. An obstacle avoidance operation such as an emergency stop is performed.
As such an obstacle detection means, a seat plate provided at the lowermost end of the shutter curtain is connected to the lowermost end of the shutter curtain in an upper series, and an upper upper plate portion is vertically movable with respect to the upper plate portion. And an obstacle detection sensor provided on the upper seat plate side and detecting that the lower seat plate has moved upward with respect to the upper seat plate portion. It has been proposed that an obstacle detection sensor determines that an obstacle has been detected when the obstacle detection sensor detects that the part has moved up due to contact (being pinched) by an obstacle.
By the way, when an obstacle comes into contact with the lower seat plate portion, the contact position is different in the left-right direction and the front-back direction. Therefore, the lower seat plate portion has various states corresponding to these different contact positions. (Posture) (up and down movement in the left and right direction, up and down in the front and back direction, and up movement in which these are combined). There is a problem that it is difficult to detect with one obstacle detection sensor provided between the seat plates.
Therefore, an intermediate detecting member is provided between the lower seat plate portion and the upper seat plate portion so as to move upward (swing) with a pivot (supporting point) supported by the upper seat plate portion as a fulcrum (starting point). Conventionally, there has been proposed a configuration in which a simple upward movement is integrated into an upward movement of the intermediate detection member with the pivot portion as a fulcrum, and this can be detected by an obstacle detection sensor provided on the upper seat plate side. (For example, see Patent Documents 1 and 2.)

JP-A-8-105280 JP-A-10-46962

In such a conventional device, the upward movement of the intermediate detection member is not an upward movement due to the abutment of the lower seat plate portions from both front and rear sides as in the case where the lower seat plate portion is uniformly moved upward and backward. When the lower seat plate is tilted in one of the front and rear directions and moves upward, a larger upper power is required compared to the case of upward movement due to contact from both sides in the front and rear direction. However, in this case, the force when the intermediate detection member is moved upward on one side in the front-rear direction close to the shaft support is more than when the intermediate detection member is moved upward on the other side in the front-rear direction far from the shaft support. Is also required.
Therefore, in the above-described conventional apparatus, the upward movement of the intermediate detection member in response to the lower seat plate portion having tilted upward in the front-rear direction has been described. There is almost no problem with the configuration in which the distance from the support is long and the upward movement of the lower seat plate portion is received as it is, but there is almost no problem. Because the distance from the shaft support is short, it is difficult to obtain sufficient force with the upper power generated by the lower seat plate. Therefore, the lower seat plate moves upward while sliding on the inclined portion provided on the intermediate detection member side. With this configuration, measures were taken to reduce the upward power of the intermediate detection member.
However, such an upward movement of the intermediate inclined member on one side in the front-rear direction is performed in response to the upward movement of the side part of the lower seat plate in an inclined manner on the other side in the front-rear direction with respect to the shaft support. For this reason, if the upper power is to be reduced and a reliable upward movement of the intermediate detecting member is to be performed, a long gentle upward movement is required.To cope with this, the seat plate must be long in the front-rear direction. If such measures cannot be taken, there is a problem that a weight body (balancer) must be provided to promote the upward movement of the intermediate detection member as in Patent Document 1. These have problems to be solved by the present invention.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has been made to solve these problems. The invention of claim 1 performs opening and closing of an opening that can pass in the front-rear direction by moving up and down. A lower seat having an opening / closing body, wherein a seat plate provided at a lowermost end portion of the opening / closing body is moved upward with respect to the upper seat plate portion when an obstacle comes in contact with an upper seat plate portion connected to the opening / closing body; A plate portion, an intermediate detection member interposed between the upper and lower seat plate portions and moving upward by receiving the upward movement of the lower seat plate portion, and an obstacle detection sensor for detecting the upward movement of the intermediate detection member. An architectural opening / closing device provided with an obstacle detecting means configured as above, wherein the intermediate detecting member is supported on the upper seat plate so as to be biased to one side in the front-rear direction, and A vertical piece that hangs down in the vertical direction, and the other side in the front-rear direction from the lower end of the vertical piece And a horizontal piece extending toward the lower seat plate so that the horizontal piece can swing upward through the shaft support so that the horizontal piece moves upward by receiving an upward movement due to an obstacle contact of the lower seat plate. In addition to the pivotally supported configuration, the obstacle detecting sensor is configured to detect the upward movement of the horizontal piece, and the vertical piece is biased to one side in the front-rear direction with respect to a vertical line passing through the shaft support. The detection receiving portion is provided, and the intermediate detection member is configured such that when the one side in the front-rear direction of the lower seat plate portion moves upward, the lower seat plate portion slides on the detection receiving portion so that the vertical piece portion faces the perpendicular side. An architectural opening / closing device including an obstacle detecting means, which is configured to perform upward movement of a horizontal piece for detecting operation of an obstacle detection sensor when pushed.
According to a second aspect of the present invention, there is provided a building having an obstacle detecting means according to the first aspect, wherein the detection receiving portion is provided on an inclined portion which is inclined so as to be deviated to one side in the front-rear direction as it goes upward. Switchgear.
According to a third aspect of the present invention, the obstacle detection sensor is disposed above the horizontal piece in a state where the obstacle detection sensor is located between the pivot portion and the other end in the front-rear direction of the horizontal piece. An architectural switchgear provided with the obstacle detecting means according to item 1 or 2.
The invention according to claim 4 is characterized in that the detection receiving portion is set so that the sliding contact position of the lower seat plate portion moved up to the detection receiving portion does not exceed a perpendicular passing through the shaft support portion to the other side in the front-rear direction. An architectural switchgear provided with the obstacle detecting means according to any one of claims 1 to 3.

According to the first aspect of the present invention, while the upward movement detection of the intermediate detecting member that moves upward by receiving the upward movement of the lower seat plate portion due to the obstacle contact is performed by the obstacle detection sensor, When the upward movement of the intermediate detection member is performed by the lower seat plate portion slidingly contacting the detection receiving portion provided on the vertical piece portion provided on one side in the front-rear direction, the detection receiving portion is located above the intermediate detection member. It is biased to one side in the front-rear direction with respect to the vertical line passing through the shaft supporting portion serving as the moving support shaft, and the lower seat plate portion abutting here moves upward by pushing the detection operation portion toward the vertical line side. As a result, the detection receiving portion is steeply inclined, so that the amount of movement in the front-rear direction on the obstacle detection sensor side can be reduced, so that compactness can be achieved and smooth obstacle detection can be performed.
According to the second aspect of the present invention, when the intermediate detection member moves upward, the vertical piece moves to the perpendicular side, but the detection receiving portion formed on the vertical piece moves forward and backward as it goes upward. In this case, even if the vertical piece moves to the perpendicular side, the sliding contact of the lower seat plate portion with the detection receiving portion is prevented from being impaired. The detection operation of the detection sensor becomes more reliable.
According to the third aspect of the present invention, the space for disposing the obstacle detection sensor can be secured above the horizontal piece in a state where it is located between the shaft support and the other end in the front-rear direction of the horizontal piece. As a result, the efficiency of member arrangement can be improved.
According to the fourth aspect of the present invention, even if the lower seat plate moves up to the maximum, the sliding contact position of the lower seat plate portion with respect to the detection receiving portion formed on the vertical piece portion is perpendicular to the line passing through the shaft support portion in the front-rear direction. Since it does not cross over to the other side, it is possible to maintain the state in which the fulcrum does not exceed the fulcrum until it moves up to the maximum, and it is possible to prevent the smoothness of the upward movement of the intermediate detection member from being impaired.

It is a front view of an architectural shutter device. It is a top view of a seat plate. It is a front view of a seat plate. FIG. 4 is an enlarged side sectional view of an obstacle detection sensor portion of the seat plate. (A), (B) is operation | movement explanatory drawing which shows the state which a lower seat plate part moves up in a parallel attitude | position. (A), (B) is an operation explanatory view showing a state in which one side in the front-rear direction of the lower seat plate moves upward. (A) (B) is an operation explanatory view showing a case where the other side in the front-rear direction of the lower seat plate portion moves upward. (A), (B), and (C) are a front view, a plan view, and a side view of the upper seat plate portion. (A), (B), and (C) are a front view, a plan view, and a side view of the lower seat plate portion. (A), (B), and (C) are a front view, a plan view, and an enlarged side view of the intermediate detection member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an architectural shutter device (architecture opening / closing device) provided for opening and closing an opening that can pass in the front-rear direction, and the architectural shutter device 1 is provided on both left and right sides of the opening. A guide rail 2, a shutter curtain (opening / closing body) 3 that opens and closes an opening by being guided up and down (up and down) by the guide rail 2, and is provided at an upper end of the opening, and the shutter curtain 3 is wound thereon. The winding drum 4, an electric switchgear 5 for driving the winding drum 4 in the normal and reverse directions, and a control unit 6 for controlling the operation of the switchgear 5 are all provided with various members. As before. In addition, the definition of the front-back direction is defined as the direction that normally passes through the opening, the front-rear direction, the front side is referred to as “front”, and the opposite side (the other side, the hand side) is referred to as “rear” with respect to the opening. Although the preceding and following definitions are provided for convenience, it is needless to say that the present invention is not limited to this.

  At the lowermost end of the shutter curtain 3, a seat plate 7 which is substantially the same width as the shutter curtain 3 and is long in the left-right direction is provided, and the seat plate 7 is attached to the lowermost slat 3 a of the shutter curtain 3. An upper seat plate 8 to be connected (provided), a lower seat plate 9 provided to be vertically movable with respect to the upper seat plate 8, and an intermediate detection interposed between the upper and lower seat plates 9, 9. It comprises a member 10 and an obstacle detection sensor 11 provided on the upper seat plate 8 in a state of being disposed between the upper seat plate 8 and the intermediate detection member 10, and these will be described in detail below. .

The upper seat plate portion 8 has an opening on the lower side (lower edge), and is formed in a zigzag shape having an upper piece portion 8a on the ceiling side and side pieces 8b on both front and rear sides. In the present embodiment, the upper piece portion 8a has a first upper piece portion 8d in which the center (intermediate) portion in the front-rear direction is higher with the front and rear step piece portions 8c facing up and down. It is formed in a convex shape having a second upper piece 8e disposed in front and rear lower than the one upper piece 8d, but the upper part in the front-rear center (intermediate) portion of the first upper piece 8d A connecting piece 8f is formed so as to protrude toward. In the upper seat plate 8, the connecting piece 8f is fixed to the lowermost slat 3a via a bolt 3b which is a fastener.
Further, the side piece portion 8b is provided in a hanging manner from an outer edge in the front-rear direction of the second upper piece portion 8e. One piece 8g is formed to protrude. A portion of the horizontal piece 8g, which extends toward the opposite side (opposite side) of the side piece 8b, is engaged with the lower seat plate 9 as described later. The receiving portion is 8h.

  On the other hand, the lower seat plate portion 9 is open at the upper side, and has a bottom lower portion 9a and front and rear side pieces 9b provided upright from both longitudinal edges of the lower portion 9a. The side piece 9b has a lower first side piece 9c standing upright from both front and rear edges of the lower piece 9a, and the first side piece 9b. A step piece 9d formed to face inward in the front-rear direction from the upper end of the section 9c; a second side piece 9e formed upward from the front-rear inner end of the step piece 9d; An upper piece 9f formed horizontally from the upper end of the two-side piece 9e outward in the front-rear direction is provided. In the present embodiment, the upper piece 9f is provided between the front and rear first side pieces 9c. , And the second side piece 9e, a recessed space S is formed in a state continuing vertically.

The lower seat plate portion 9 has the second side piece 9e loosely fitted (with a gap (gap) in the front-rear direction) at the inner end in the front-rear direction of the upper seat plate lock receiving portion 8h. Thus, the upper piece 9f is configured to be movable up and down with the position where the upper piece 9f is locked on the upper surface of the locking receiving portion 8h as the lower limit and the position where the step piece 9d abuts on the lower surface of the locking receiving piece 8h as the upper limit. However, the lower seat plate portion 9 has a natural lowering posture when the front and rear upper pieces 9f are received and locked by the front and rear lock receiving portions 8h of the upper seat plate portion 8, respectively. Thus, the upper piece 9f forms a locking portion for locking the lower seat plate 9 to the upper seat plate 8.
Moreover, in this case, the upward movement of the lower seat plate portion 9 corresponds to that in which the lower seat plate portion 9 moves upward while maintaining the natural downward movement posture (parallel state) (see FIG. 5). The upward movement of the upper piece 9f on one side is inclined upward (see FIG. 6), the upward movement of the upper piece 9f on the other side is upwardly inclined (see FIG. 7), and the inclined movement is intermediate between these. Defined to include upward movement.

  The upward movement posture of the lower seat plate portion 9 with respect to the upper seat plate portion 8 when the lower seat plate portion 9 moves upward is a typical example of the upward movement when an obstacle contacts the lower seat plate portion 9 and is caught. When an obstacle comes into contact with the central portion in the front-rear direction, the obstacle moves upward while maintaining the natural downward movement position (natural posture) (see FIG. 5), and the object moves toward one side in the front-rear direction. When an object comes in contact, the one side is lifted up in an inclined state (see FIG. 6), and when the obstacle comes in contact with the other side in the front-rear direction, the other side is raised. The upward movement in the inclined state (see FIG. 7) can be shown, and the actual upward movement of the lower seat plate portion 9 is a complex combination of these upward movements. Reference numeral 11 is set to detect any of these upward movements.

  One end of the intermediate detection member 10 in the front-rear direction is supported by the upper seat plate 8 so as to be swingable in the front-rear direction. In other words, the intermediate detection member 10 includes a cylindrical shaft support 10a having an upper opening at the upper end, and the shaft support 10a is a front and rear of a pair of front and rear second upper pieces 8e of the upper seat plate 8. It is externally fitted to a cylindrical bearing portion 8i formed on the lower surface of the second upper piece portion 8e at one side in the direction so as to be swingable (slidable) in the front-rear direction. The intermediate detecting member 10 includes a vertical piece 10b hanging vertically (downward) from the shaft support 10a and a horizontal piece extending laterally from the lower end of the vertical piece toward the other side in the front-rear direction. The space between the shaft support portion 10a and the horizontal piece portion 10c in a state of being located on the other side in the front-rear direction with respect to the one piece portion 10c and the vertical piece portion 10b (the other side in the front-rear direction with respect to a perpendicular X passing through the shaft support portion 10a described later) And a reinforcing piece 10d provided so as to be connected to form a substantially L-shape. The reinforcing piece 10d is formed of a shaft support 10a, a vertical piece 10b, and a horizontal piece 10c. It has a hollow shape (cylindrical shape) together with the one side part in the front-rear direction, whereby the L-shaped vertical piece 10b and the horizontal piece 10c are reinforced.

  Moreover, the vertical piece portion 10b is configured to hang from a position deviating to one side in the front-rear direction with respect to a perpendicular X passing through the shaft support portion (axial center O) 10a. An arc-shaped (arc-shaped) portion 10f is formed so as to bulge toward one side in the front-rear direction from a portion deviating to one side in the front-rear direction, and the lower side from the bulging top portion of the arc-shaped portion 10f in the front-rear direction. An inclined portion (including an arc shape and a linear inclined shape) 10g inclined toward the other side is formed, and in the process of inclining near the lower end portion of the inclined portion 10g, crosses the vertical line X to the other side in the front-rear direction. At a position lower than the locking receiving portion 8h, it is connected to one end in the front-rear direction of the lateral piece portion 10c via a substantially L-shaped connecting portion 10h.

  On the other hand, the horizontal piece portion 10c is provided so as to extend in the lateral direction from the portion connected to the vertical piece portion 10b toward the other side in the front-rear direction, and as an extension form, from the connection portion 10h to the upper seat plate portion. 8, a first horizontal piece 10i provided horizontally toward the other side in the front-rear direction up to a position beyond the center position (center position of the seat plate) M in the front-rear direction, and the other side in the front-rear direction of the first horizontal piece 10i It extends in an inclined manner so as to rise from the end to the other side in the front-rear direction, and is set so that the upper end of the slope (the other end in the front-rear direction) reaches the height of the upper piece 9 f of the lower seat plate 9. A second horizontal piece 10j, and an upper half of the lower seat plate 9 extending horizontally from the other end in the front-rear direction of the second horizontal piece 10j toward the other side in the front-rear direction. Up to 9f and a third horizontal piece 10k that comes into contact with the upper piece 9f from above. It has been made.

In the closing process of the opening where the shutter curtain 3 is lowered, an obstacle comes into contact with the lower seat plate 9 from below, and the lower seat plate 9 moves upward with respect to the upper seat plate 8. In response to this, the intermediate detection member 10 moves upward with the pivot 10a as a fulcrum for obstacle detection. The upward movement of the intermediate detection member 10 will be described below.
As described above, in the state where the lower seat plate portion 9 does not come into contact with an obstacle, the upper piece portions 9f on both sides in the front-rear direction contact the locking receiving portions 8h on both sides in the front-rear direction of the upper seat plate portion 8 from above. In this state, when an obstacle comes into contact with the lower seat plate portion 9, the lower seat plate portion 9 moves in the natural downward movement position due to the contact position. , The upper piece 9f is lifted up and separated from the locking receiving portions 8h on both sides in the front-rear direction (first upward movement), and the upper piece 9f on one side in the front-rear direction. Is lifted from the lock receiving portion 8h on the side, and the upper piece 9f on the other side is moved upward (second upward motion) in an inclined state in contact with the lock receiving portion 8h on the side, and the other side in the front-rear direction. The upper piece 9f is lifted up from the lock receiving portion 8h on the side, and the upper piece 9f on one side in the front-rear direction is inclined in contact with the lock receiving portion 8h on the side. Will perform upward movement to the state of the upward movement (the third upward) typified state, but the upward movement of the intermediate detection member 10 will be described with reference to the upward movement of the typical state.

First, the intermediate detecting member 10 is provided at the corner between the upper piece 9f and the second piece 9e on one side in the front-rear direction when the lower seat plate 9 is in a natural hanging posture without any contact with an obstacle. The portion 9g is separated from the vertical piece portion 10b, and on the other side in the front-rear direction, the third horizontal piece portion 10k is placed in contact with the upper piece portion 9f from above, and from this state, the lower seat plate portion When the first and third upward movements of the upper piece 9f of the other side in the front-rear direction move upward, the intermediate detection member 10 is configured to move the corner portion of the lower seat plate 9 at the initial stage of the upward movement. Since 9g is separated from the vertical piece 10b, the third horizontal piece 10k is moved upward by the upper piece 9f on the other side in the front-rear direction.
When the upward movement in this case is the third upward movement in which only the other side in the front-rear direction is lifted, the intermediate detection member 10 is configured such that the third horizontal piece 10k is moved upward by the upper piece 9f on the other side in the front-rear direction. The upward movement to be pushed up will continue as it is, but when the lower seat plate portion 9 is the first upward movement (upward movement on both sides in the front-rear direction) while maintaining the natural downward movement posture. In a case where the lower seat plate portion 9 ascends in an ideal state in which the lower seat plate portion 9 is located at the center position in the front-rear direction as shown in FIG. 5, the corner portion 9g on one side in the front-rear direction of the lower seat plate portion 9 becomes an inclined portion 10e. , The lower seat plate portion 9 comes into contact with the inclined portion 10g of the vertical piece portion 10b during the upward movement of the lower seat plate portion 9, and thereafter, the intermediate detection member 10 When the seat plate 9 makes the second upward movement, it swings in response to the second upward movement. If the plate portion 9 is positioned offset in the longitudinal direction, so that the swing (upward movement) corresponding to the positional deviation position and the positional deviation amount. In this case, the corner portion 9g moves up from the beginning in contact with the inclined portion 10g, and the corner portion 9g does not come into contact with the inclined portion 10g, and the third horizontal piece portion 10k is placed on the other side in the front-rear direction from the beginning. The upward movement pushed up by the one part 9f is made into a bipolar state, and the combined upward movement is actually performed.

On the other hand, when the lower seat plate portion 9 makes the second upward movement, the upper piece portion 9f on the other side in the front-rear direction is kept in contact with the lock receiving portion 8h, and the upper portion 9f on the one side in the front-rear direction is kept. The one-sided portion 9f is moved upward in an inclined manner, and the corner 9g on the side comes into contact with the inclined portion 10g at a position deviated to one side in the front-rear direction with respect to the perpendicular X of the shaft support 8i. When the corner portion 9g rises in this contact state, the corner portion 9g rises while sliding on the sloped portion 10g. Since the vertical piece 10b is set to be deviated, the vertical piece 10b is pushed toward the other side in the front-rear direction in response to the sliding movement of the corner 9g. Thus, the intermediate detecting member 10 is set so that the third lateral piece 10k swings up and down with the pivot 10a as a fulcrum. In the course of this upward movement, the detection operation by the obstacle detection sensor 11 is performed. That is, the inclined portion 10g thus configured is a detection receiving portion for pushing the vertical piece portion 10b in the perpendicular X direction when the lower seat plate portion 9 slides in a contact state. 10e.
In this case, when the third upward movement of the lower seat plate portion 9 reaches a maximum state, that is, the step piece portion 9d on one side in the front-rear direction of the lower seat plate portion 9 becomes the horizontal piece portion 8b of the upper seat plate portion 8. When it comes into contact with the corner portion 9g, the corner portion 9g on the side extends over the inclined portion 10g to reach the upper half portion of the arc-shaped portion 10f. , And is set so as not to cross the perpendicular X to the other side in the front-rear direction.

  On the other hand, the obstacle detecting sensor 11 is configured using a general-purpose microswitch of a normally closed contact (B contact) type in the present embodiment, but swings to the sensor main body 11a via a support shaft 11b. The detection lever movably provided (corresponding to the "detection operating body" of the present invention) 11c receives the urging force of the return spring 11c (in the present embodiment, also receives the self-weight descent force of the detection lever 11c). )) The switch lever 11d provided on the sensor main body 11a is moved downward to press and move, and in this state, the obstacle detection sensor 11 is in a non-detection state (OFF detection state). When the detection lever 11c moves upward as described later, the switch lever 11d is released from being pressed, and moves to the natural posture side by receiving the urging force of the unillustrated internal return elastic machine, As a result, the obstacle detection sensor 11 is set to switch to the detection state (ON detection state).

  In the present embodiment, the obstacle detection sensor 11 configured as described above is attached to the upper seat plate portion 8 via the inverted L-shaped bracket 12, and the attachment position is set to the upper seat plate portion 8. On the lower surface of the first upper piece portion 8d, a position deviated to the other side in the front-rear direction with respect to the center position M of the seat plate, and disposed above the first and second horizontal piece portions 10i and 10j. In the obstacle detection sensor 11 mounted in this manner, the detection lever (corresponding to the “detection operating body” of the present invention) 11 c is located substantially at the center position M of the seat plate. The first horizontal piece 10i is set at a position facing the middle position in the front-rear direction, that is, a position facing the recessed space S downward. In a natural state (normal state, non-detection state) in which the lower seat plate 9 does not come into contact with an obstacle, the lower edge of the detection lever 11c is opposed to the first horizontal piece 10i of the lower seat plate horizontal piece 10c. In this state, the obstacle detection sensor 11 is in a natural state in which the detection lever 11c is moved down as described above, and is in a non-detection state.

  From such a non-detection state, when the horizontal piece 10c of the intermediate detection member 10 is moved upward with the pivot 10a as a fulcrum due to the upward movement due to the contact of the lower seat plate 9 with an obstacle, the detection is performed. The detection lever 11c is pushed up when the lever 11c comes into contact with an intermediate portion in the front-rear direction of the first horizontal piece 10i in which the obstacle detection sensor 11 is switched from the non-detection state to the detection state. The first horizontal piece 10i is provided with a detection operation section for detecting and operating the detection lever 11c.

In this case, when the first horizontal piece 10i comes into contact with the detection lever 11c, one side in the front-rear direction (the vertical piece 10b side) is in a gently inclined state in which the lower side is lowered. As the upward movement of the plate portion 9 proceeds, the first lateral piece portion 10i becomes higher on the other side in the front-rear direction and changes from the gentle inclination state to the steep inclination state, thereby pushing up the detection lever 11c. Is proceeding, and the obstacle detection by the obstacle detection sensor 11 is performed.
That is, the movement (sliding) of the detection lever 11c with respect to the first horizontal piece 10i at this time is such that one side in the front-rear direction increases as the intermediate detection member 10 moves upward while receiving the upward movement of the first horizontal piece 10i. This involves moving the first horizontal piece 10i in the inclined state, which changes so as to be lowered and becomes steeply inclined, in a downward direction, and thereby pushes up the detection lever 11c while sliding the first horizontal piece 10i. Since the operation can be performed smoothly, the detection operation of the obstacle detection sensor 11 is reasonable and the reliability is improved.

In addition, as described above, the intermediate detection member 10 moves upward with the pivot 10a as a fulcrum due to the upward movement caused by the contact of the seat plate 9 with the obstacle, and the obstacle detection sensor 11 detects this. In this case, the obstacle detecting operation is performed. In this case, the intermediate detecting member 10 is provided with the inclined portion S in the recessed space S formed in the lower seat plate portion 9 in a state where there is no obstacle contact. A part of 10 g and the first and second horizontal pieces 10 i and 10 j are in a shallow state. When the intermediate detection member 10 moves upward by receiving the upward movement corresponding to the obstacle contact of the lower seat plate portion 9 from this state, the intermediate detection member 10 further moves to the third horizontal piece portion 10k. Part (one side part in the front-rear direction) is set so as to enter deeply into the space S. In this way, the storage space of the intermediate detection member 10 that swings in response to obstacle detection is lowered. The configuration is such that the seat plate 9 is secured.
In addition, in this case, the obstacle detection sensor 11 is also set so that the lower portion also enters the space S of the lower seat plate portion 9 moved up by the contact with the obstacle.
In the drawing, reference numeral 13 denotes anti-sway members provided at left and right ends of the upper seat plate portion 8, and reference numerals 14 extend members provided at left and right end portions of the lower seat plate portion 9, both of which are guide grooves of the guide rail 2. It is set to fit inside. Reference numeral 15 denotes an operation switch provided for performing forward / reverse driving of the switch 5 and stopping the same, and 16 denotes a transmitter for transmitting a detection signal from the obstacle detection sensor 11.

In the present embodiment configured as described above, when an obstacle comes in contact with the lower seat plate 9 in the process of closing the shutter curtain 3, the lower seat plate 9 is attached to the obstacle. The obstacle detection sensor 11 moves upward due to the contact position, and receives the upward movement of the intermediate detection member 10 in conjunction therewith, so that the obstacle detection sensor 11 performs an obstacle detection operation. In a case where the intermediate detection member 10 is moved upward by the lower seat plate portion 9 being in contact with the vertical piece portion 10b on one side (the shaft support portion 10a side), the vertical piece portion 10b is perpendicular to the vertical line X passing through the shaft support portion 10a. Is also provided with a detection receiving portion 10e that is deflected to one side in the front-rear direction, and the corner 9g of the lower seat plate portion 9 abutting the detection receiving portion 10e moves the detection receiving portion 10e in the perpendicular X direction, that is, the other side in the front-rear direction. Pushing toward the middle So that the upward movement of the knowledge member 10 is made.
As a result, the detection receiving portion 10e can be steeply inclined and the amount of movement in the front-rear direction on the obstacle detection sensor 11 side can be reduced, so that the intermediate detection member 10 can be simplified and compact, and a smooth obstacle can be achieved. It will be able to detect.

  In addition, in this case, the detection receiving portion 10e is provided on the inclined portion 10g which is inclined so as to be deviated to one side in the front-rear direction as it goes upward, so that when the intermediate detection member 10 moves upward, the vertical piece portion 10b Moves to the perpendicular X side, but the detection receiving portion 10e is configured to be deflected to one side in the front-rear direction toward the upper side, and even if the vertical piece portion 10b moves to the perpendicular X side, the detection receiving portion 10e The sliding contact of the lower seat plate portion 9 with respect to is reliably prevented from being damaged (disengaged), and the detection operation of the obstacle detection sensor is more reliably performed.

  In addition, in this embodiment, the obstacle detection sensor 11 is positioned between the shaft support 10a and the third horizontal piece 10k on the other side in the front-rear direction of the horizontal piece 10c, and the horizontal piece 10c (the first horizontal piece). Since it is arranged above 10i), it is easy to secure a space for arranging the obstacle detection sensor 11, and the member arrangement can be made more efficient. In particular, in the present embodiment, since the obstacle detection sensor 11 is disposed above the concave space S provided in the lower seat plate portion 9, the obstacle detection sensor 11 can be arranged using the concave space S. become.

  Further, in this case, when the lower seat plate portion 9 has moved up to the maximum (see FIGS. 5 and 6), the sliding contact position of the lower seat plate portion 9 with the detection receiving portion 10e formed on the vertical piece portion 10b is determined. Since the perpendicular X passing through the shaft support 10a does not cross the other side in the front-rear direction, the shaft support of the intermediate detection member 10 in response to the lower seat plate 9 slidingly contacting the detection receiving portion 10e on the vertical piece 10b side. The upward movement with the fulcrum 10a as a fulcrum can be maintained until the state where the fulcrum does not exceed the fulcrum is maximized, and it is possible to prevent the smoothness of the upward movement of the intermediate detection member 10 from being impaired.

    The present invention is, of course, not limited to the above-described embodiment, but in the above-described embodiment, the shutter curtain 3 is formed by connecting plate-shaped slats in a vertical direction in a series. Although it is constituted as a thing, it is not limited to this. The so-called pipe type (grill type) in which pipe materials are arranged at intervals in the vertical direction, and furthermore, the slats are cylindrical (follow-shaped). Needless to say, the present invention can also be implemented as an appropriately shaped one such as one having a panel shape or a panel shape.

  INDUSTRIAL APPLICABILITY The present invention can be used for an architectural opening / closing device provided with an obstacle detecting means installed at an opening such as a doorway of a building.

DESCRIPTION OF SYMBOLS 1 Construction shutter device 2 Guide rail 3 Shutter curtain 3a Lowermost slat 7 Seat plate 8 Upper seat plate portion 8h Lock receiving portion 9 Lower seat plate portion 10 Intermediate detecting member 10a Shaft support portion 10b Vertical piece portion 10c Horizontal piece portion 10e Detection receiver Part 10i First horizontal piece 10j Second horizontal piece 10k Third horizontal piece 11 Obstacle detection sensor 11c Detection lever M Center of seat plate O Axis center S Depressed space X Vertical line

Claims (4)

Equipped with an opening and closing body that opens and closes an opening that can pass in the front and rear direction by up and down movement,
A seat plate provided at the lowermost end of the opening / closing body, an upper seat plate portion connected to the opening / closing body, a lower seat plate portion that moves upward with respect to the upper seat plate portion when an obstacle comes in contact with the seat plate, An intermediate detection member interposed between the seat plate portions and moving upward in response to the upward movement of the lower seat plate portion, and an obstacle detection sensor configured to detect the upward movement of the intermediate detection member are provided. In an architectural switchgear provided with obstacle detection means comprising:
A shaft support that is supported by the upper seat plate so as to be deflected to one side in the front-rear direction, a vertical piece hanging vertically from the shaft support, and a lower end of the vertical piece; And a horizontal piece extending toward the other side in the front-rear direction from above, and the horizontal support is moved upward by the horizontal piece being upwardly moved by the abutment of the lower seat plate with the obstacle. In the configuration in which the obstacle detection sensor is configured to detect the upward movement of the horizontal piece,
The vertical piece portion is provided with a detection receiving portion that is deviated to one side in the front-rear direction with respect to a perpendicular passing through the shaft support portion,
The intermediate detection member detects an obstacle by sliding the vertical piece portion toward the perpendicular side by sliding the lower seat plate portion into contact with the detection receiving portion when one side in the front-rear direction of the lower seat plate portion moves upward. An opening / closing device for building comprising obstacle detecting means, characterized in that it is configured to perform upward movement of a horizontal piece for detecting operation of a sensor. The architectural opening / closing device according to claim 1, wherein the detection receiving portion is provided on an inclined portion that is inclined so as to be deviated toward one side in the front-rear direction as it goes upward. The obstacle according to claim 1, wherein the obstacle detection sensor is disposed above the horizontal piece in a state positioned between the pivot portion and the other end in the front-rear direction of the horizontal piece. An architectural switchgear provided with object detection means. The detection receiving portion is set so that a sliding contact position of the lower seat plate portion that has moved up to the maximum with respect to the detection receiving portion does not exceed a vertical line passing through the pivot portion to the other side in the front-rear direction. An architectural switchgear provided with the obstacle detecting means according to any one of the above.

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